Unsurprisingly, Robin Thicke's ear worm track "Blurred Lines," featuring Pharrell Williams and T.I., remains on top of the Billboard Hot 100 for its second consecutive week. The song, which is Thicke's first chart-topper, gains 18% with 371,000 downloads sold in the last week. It is also the top song on the Digital Songs chart, a well as Hot R&B/Hip-Hop Songs chart.

While last week was good week for Williams, seeing two of his songs in the top five, he's extra "Lucky" this week, as Daft Punk's Pharrell-featuring "Get Lucky" jumps to No. 2, right behind "Lines." He's the first artist in four years to be credited on the Nos. 1 & 2 songs concurrently. The Black Eyed Peas are the last act to do so, back in summer 2009, with "Boom Boom Pow" at No. 1 and "I Gotta Feeling" at No. 2.

Rounding out the top five are Macklemore and Ryan Lewis' "Can't Hold Us," featuring Ray Dalton, at No. 3, Imagine Dragons' "Radioactive" (which reaches the top five after a lengthy, record-breaking 42 weeks on the Billboard chart) at No. 4 and Justin Timberlake's "Mirrors" at No. 5.